New local provider changes land in trunk - quantal users beware

[Mark Mims]

Thanks Clint!

On Sat, Oct 06, 2012 at 09:24:27AM -0700, Clint Byrum wrote:
> So, after some testing and reviews, an overhaul of the local provider has
> landed in trunk! Thanks to Kapil for getting the ball rolling on that,
> and for the review of the finished product.
> 
> This change switches the local provider to use the Ubuntu Cloud Images
> instead of building a minimal chroot with debootstrap. This brings the
> local provider closer in line with the other providers. This also means
> that you are more likely to have an up to date container on deploy. This
> also may end up being a bit of a regression because it is a bit slower
> to untar and upgrade the cloud image than it was to just copy and boot
> an out of date chroot.
> 
> The change also switches to using lxc's built in bridge, rather than
> libvirt for networking. This means that libvirt is no longer a dependency
> of juju, and it also means juju can play nicely with existing libvirt
> setups.
> 
> We've also removed all upstart jobs from the local provider, so there
> shouldn't be issues with the machine agent spinning out of control on
> reboot. It also won't leave anything behind if you reboot other than
> stale pid files in the data-dir.
> 
> With this change, Ubuntu 11.10 users will need a backported ubuntu-cloud
> LXC template to use the local provider. 11.10 users are encouraged to
> update to 12.04, but if you are stuck on 11.10 it may be better to use
> juju 0.5.2 from the 0.5 PPA.
> 
> Unfortunately, while testing this extensively, I ran into this kernel
> bug in quantal quite a bit:
> 
> https://bugs.launchpad.net/ubuntu/quantal/+source/linux/+bug/1021471
> 
> The bug seems to be mostly understood now (its really two bugs) and I
> hope that fixes will be released for quantal's kernel ASAP. The workaround
> for users with a 'wl' based wireless chipset is to use an older kernel (I
> use 3.4.12 from the upstream kernel PPA, but precise's kernels might work
> too). For non-wl users a newer kernel should work fine (3.6 for instance).
> 
> This should be the final change that lands in "honolulu" (0.6). I will
> keep trunk open for bug fixes only until Tuesday (conveniently after
> the US holiday Columbus Day). After that, 0.6 will be released. I've
> gone ahead and uploaded trunk to the 0.6 PPA now. On release day it will
> receive 0.6 and then only be updated for 0.6.x series releases.
> 
> -- 
> Juju mailing list
> Juju at lists.ubuntu.com
> Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/juju
> 

-- 
Mark Mims, Ph.D.
Ubuntu Server Team
Canonical Ltd.
mark.mims at canonical.com
+1(512)981-6467